ITT Goulds Pumps 3335 Manual

Installation, Operation and
Maintenance Instructions
3335

Table of Contents
1 Introduction and Safety ....................................................................................................................................2
1.1 Important Safety Notice.............................................................................................................................2
1.2 Safety Warnings ........................................................................................................................................2
1.3 Safety ........................................................................................................................................................ 3
1.4 General precautions .................................................................................................................................. 3
1.5 Parts .......................................................................................................................................................... 5
2 Introduction........................................................................................................................................................6
2.1 Introduction................................................................................................................................................ 6
3 General ...............................................................................................................................................................7
3.1 Importance of instructions ......................................................................................................................... 7
3.2 Special warnings ....................................................................................................................................... 7
3.3 Receiving inspection - shortages .............................................................................................................. 7
3.4 Preservation and storage .......................................................................................................................... 7
3.5 Handling techniques..................................................................................................................................7
4 Installation..........................................................................................................................................................8
4.1 General...................................................................................................................................................... 8
4.2 Piping ........................................................................................................................................................ 8
4.3 Alignment procedures ............................................................................................................................... 8
4.4 Rotation check and connection of coupling.............................................................................................10
4.5 Lubrication...............................................................................................................................................10
5 Operation.......................................................................................................................................................... 11
5.1 Start-up check ......................................................................................................................................... 11
5.2 Start-up procedure .................................................................................................................................. 11
5.3 Operational checks.................................................................................................................................. 11
5.4 Shut down procedure .............................................................................................................................. 11
6 Preventative and Corrective Maintenance ....................................................................................................12
6.1 Lubrication...............................................................................................................................................12
6.2 Mechanical seal....................................................................................................................................... 12
6.3 Vibration .................................................................................................................................................. 12
6.4 Performance............................................................................................................................................12
7 Disassembly and Reassembly .......................................................................................................................13
7.1 Disassembly of pump .............................................................................................................................. 13
7.2 Inspection and overhaul .......................................................................................................................... 13
7.3 Reassembly of power end.......................................................................................................................14
7.4 Reassembly of liquid end ........................................................................................................................ 14
7.5 Bearing replacement ............................................................................................................................... 18
7.6 Mechanical seal replacement..................................................................................................................18
8 Troubleshooting .............................................................................................................................................. 20
8.1 Troubleshooting.......................................................................................................................................20
9 Spare Parts ......................................................................................................................................................21
9.1 Ordering spare parts ............................................................................................................................... 21
9.2 Instructions for ordering spare parts........................................................................................................ 21
Table of Contents
3335 Installation, Operation and Maintenance Instructions 1

1 Introduction and Safety
1.1 Important Safety Notice
To: Our Valued Customers:
User safety is a major focus in the design of our products. Following the precautions outlined in this man-
ual will minimize your risk of injury.
ITT Goulds pumps will provide safe, trouble-free service when properly installed, maintained, and operat-
ed.
Safe installation, operation, and maintenance of ITT Goulds Pumps equipment are an essential end user
responsibility. This Pump Safety Manual identifies specific safety risks that must be considered at all
times during product life. Understanding and adhering to these safety warnings is mandatory to ensure
personnel, property, and/or the environment will not be harmed. Adherence to these warnings alone,
however, is not sufficient — it is anticipated that the end user will also comply with industry and corporate
safety standards. Identifying and eliminating unsafe installation, operating and maintenance practices is
the responsibility of all individuals involved in the installation, operation, and maintenance of industrial
equipment.
Please take the time to review and understand the safe installation, operation, and maintenance guide-
lines outlined in this Pump Safety Manual and the Instruction, Operation, and Maintenance (IOM) man-
ual. Current manuals are available at https://www.gouldspumps.com/en-US/Tools-and-Resources/Litera-
ture/ or by contacting your nearest Goulds Pumps sales representative.
These manuals must be read and understood before installation and start-up.
For additional information, contact your nearest Goulds Pumps sales representative or visit our Web site
at https://www.gouldspumps.com
1.2 Safety Warnings
Specific to pumping equipment, significant risks bear reinforcement above and beyond normal safety
precautions.
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Any pressure vessel
can explode, rupture, or discharge its contents if sufficiently over pressurized causing death,
personal injury, property damage, and/or damage to the environment. All necessary measures
must be taken to ensure over pressurization does not occur.
WARNING:
Operation of any pumping system with a blocked suction and discharge must be avoided in all
cases. Operation, even for a brief period under these conditions, can cause superheating of
enclosed pumpage and result in a violent explosion. All necessary measures must be taken by
the end user to ensure this condition is avoided.
WARNING:
The pump may handle hazardous and/or toxic fluids. Care must be taken to identify the con-
tents of the pump and eliminate the possibility of exposure, particularly if hazardous and/or tox-
ic. Potential hazards include, but are not limited to, high temperature, flammable, acidic, caus-
tic, explosive, and other risks.
1 Introduction and Safety
2 3335 Installation, Operation and Maintenance Instructions

WARNING:
Pumping equipment Instruction, Operation, and Maintenance manuals clearly identify accepted
methods for disassembling pumping units. These methods must be adhered to. Specifically,
applying heat to impellers and/or impeller retaining devices to aid in their removal is strictly for-
bidden. Trapped liquid can rapidly expand and result in a violent explosion and injury.
ITT Goulds Pumps will not accept responsibility for physical injury, damage, or delays caused by a failure
to observe the instructions for installation, operation, and maintenance contained in this Pump Safety
Manual or the current IOM available at http://www.gouldspumps.com/literature.
1.3 Safety
Definitions
Throughout this manual the words Warning, Caution, Electrical, and ATEX are used to indicate where
special operator attention is required.
Observe all Cautions and Warnings highlighted in the Pump Safety Manual and the IOM provided with
your equipment.
WARNING:
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Example: Pump shall never be operated without coupling guard installed correctly.
CAUTION:
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Example: Throttling flow from the suction side may cause cavitation and pump damage.
Electrical Hazard:
WARNING:
Indicates the possibility of electrical risks if directions are not followed.
Example: Lock out driver power to prevent electric shock, accidental start-up, and physical in-
jury.
1.4 General precautions
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Hazardous fluids may
be contained by the pump including high temperature, flammable, acidic, caustic, explosive,
and other risks. Operators and maintenance personnel must realize this and follow safety
measures. Personal injuries will result if procedures outlined in this manual are not followed.
ITT Goulds Pumps will not accept responsibility for physical injury, damage or delays caused
by a failure to observe the instructions in this manual and the IOM provided with your equip-
ment.
Table 1: General Precautions
WARNING NEVER APPLY HEAT TO REMOVE IMPELLER. It may explode due to trap-
ped liquid.
1.3 Safety
3335 Installation, Operation and Maintenance Instructions 3

WARNING NEVER use heat to disassemble pump due to risk of explosion from tapped
liquid.
WARNING NEVER operate pump without coupling guard correctly installed.
WARNING ALWAYS lock out power to the driver before performing pump maintenance.
WARNING NEVER operate pump without safety devices installed.
WARNING Safety Apparel:
•Insulated work gloves when handling hot bearings or using bearing
heater
• Heavy work gloves when handling parts with sharp edges, especially
impellers
• Safety glasses (with side shields) for eye protection
• Steel-toed shoes for foot protection when handling parts, heavy tools,
etc.
• Other personal protective equipment to protect against hazardous/toxic
fluids
WARNING Receiving:
Assembled pumping units and their components are heavy. Failure to properly
lift and support equipment can result in serious physical injury and/or equip-
ment damage. Lift equipment only at specifically identified lifting points or as
instructed in the current IOM. Current manuals are available at www.gould-
spumps.com/literature_ioms.html or from your local ITT Goulds Pumps sales
representative. Note: Lifting devices (eyebolts, slings, spreaders, etc.) must
be rated, selected, and used for the entire load being lifted.
WARNING Before beginning any alignment procedure, make sure driver power is locked
out. Failure to lock out driver power will result in serious physical injury.
WARNING Flanged Connections:
Use only fasteners of the proper size and material.
WARNING Replace all corroded fasteners.
WARNING Ensure all fasteners are properly tightened and there are no missing fasten-
ers.
WARNING Lock out driver power to prevent accidental start-up and physical injury.
WARNING Never operate a pump without coupling guard properly installed. Personal in-
jury will occur if pump is run without coupling guard.
WARNING Never attempt to replace packing until the driver is properly locked out and the
coupling spacer is removed.
WARNING Ensure pump is isolated from system and pressure is relieved before disas-
sembling pump, removing plugs, opening vent or drain valves, or disconnect-
ing piping.
WARNING Shutdown, Disassembly, and Reassembly:
Pump components can be heavy. Proper methods of lifting must be employed
to avoid physical injury and/or equipment damage. Steel toed shoes must be
worn at all times.
WARNING The pump may handle hazardous and/or toxic fluids. Observe proper decon-
tamination procedures. Proper personal protective equipment should be worn.
1.4 General precautions
4 3335 Installation, Operation and Maintenance Instructions

Precautions must be taken to prevent physical injury. Pumpage must be han-
dled and disposed of in conformance with applicable environmental regula-
tions.
WARNING Operator must be aware of pumpage and safety precautions to prevent physi-
cal injury.
WARNING Lock out driver power to prevent accidental startup and physical injury.
CAUTION Allow all system and pump components to cool before handling them to pre-
vent physical injury.
WARNING Never apply heat to remove an impeller. The use of heat may cause an explo-
sion due to trapped fluid, resulting in severe physical injury and property dam-
age.
CAUTION Wear heavy work gloves when handling impellers as sharp edges may cause
physical injury.
CAUTION Wear insulated gloves when using a bearing heater. Bearings will get hot and
can cause physical injury.
WARNING Noise:
Sound pressure levels may exceed 80 dbA in operating process plants. Clear
visual warnings or other indicators should be available to those entering an
area with unsafe noise levels. Personnel should wear appropriate hearing pro-
tection when working on or around any equipment, including pumps. Consider
limiting personnel’s exposure time to noise or, where possible, enclosing
equipment to reduce noise. Local law may provide specific guidance regard-
ing exposure of personnel to noise and when noise exposure reduction is re-
quired.
WARNING Temperature:
Equipment and piping surfaces may exceed 130ºF (54ºC) in operating proc-
ess plants. Clear visual warnings or other indicators should alert personnel to
surfaces that may reach a potentially unsafe temperature. Do not touch hot
surfaces. Allow pumps operating at a high temperature to cool sufficiently be-
fore performing maintenance. If touching a hot surface cannot be avoided,
personnel should wear appropriate gloves, clothing, and other protective gear
as necessary. Local law may provide specific guidance regarding exposure of
personnel to unsafe temperatures.
1.5 Parts
The use of genuine Goulds parts will provide the safest and most
reliable operation of your pump. ITT Goulds Pumps ISO certifica-
tion and quality control procedures ensure the parts are manufac-
tured to the highest quality and safety levels.
Please contact your local Goulds representative for details on
genuine Goulds parts.
1.5 Parts
3335 Installation, Operation and Maintenance Instructions 5

2 Introduction
2.1 Introduction
This instruction manual is intended to assist those involved with the installation, operation, and mainte-
nance of Goulds Model 3335 Multi-Stage Pumps. It is recommended that this manual be thoroughly re-
viewed prior to installing or performing any work on the pump or motor.
2 Introduction
6 3335 Installation, Operation and Maintenance Instructions

3 General
3.1 Importance of instructions
The design, material, and workmanship incorporated into the construction of Goulds pumps make them
capable of giving long, trouble-free service. The life and satisfactory service of any mechanical unit, how-
ever, are enhanced and extended by correct application, proper installation, periodic inspection, and
careful maintenance.
This instruction manual was prepared to assist operators in understanding the construction and correct
methods of installing, operation, and maintaining these pumps.
Study thoroughly Sections 3, 4, 5 and carefully follow the instructions £or installation and operation. Sec-
tions 6,7 and 8 are answers to trouble and maintenance questions. Keep this instruction manual handy
for reference. Further information can be obtained by contacting your local branch office or the Engi-
neered Products Division, Goulds Pumps, Inc., Seneca Falls, New York 13148.
3.2 Special warnings
Goulds Pumps, Inc. will not be liable for any damages or delay caused by failure to comply with the pro-
visions of this instruction manual. This pump is not to be operated at speeds, working pressures, dis-
charge pressures or temperatures higher than, nor used with liquids other than, stated in the original or-
der acknowledgement without written permission of Goulds Pumps, Inc.
3.3 Receiving inspection - shortages
Care should be taken when unloading pumps. If shipment is not delivered in good order and in accord-
ance with the Bill-of-Lading, note the damage or shortage on both receipt and freight bill. Make any
claims to the transportation company promptly. Instruction sheets on various components, as well as the
Instruction Book for the pump, are included in the shipment - Do not discard.
3.4 Preservation and storage
Goulds normal domestic storage preparation is suitable for protecting the pump during shipment in cov-
ered trucks. It also provides protection during covered storage at the job-site and for a short period be-
tween installation and start-up.
3.5 Handling techniques
Care should be used in moving pumps. Where required by weight and size of units, slings and mechani-
cal lifting equipment should be used.
3 General
3335 Installation, Operation and Maintenance Instructions 7

4 Installation
4.1 General
Pumping unit should be placed as close as practical to the source of supply. Floor space and head room
allotted to the unit must be sufficient for inspection and maintenance. Be sure to allow for crane or hoist
service. The unit should be mounted on a substantial rigid and leveled base to prevent distortion of the
pump. Grouting of the base is recommended. Oil lubricated pumps must be installed in the horizontal po-
sition. The Model 3335 should never run dry. If there is any possibility that the pumps source of liquid
might fail, a protective device should be incorporated into the system to shut the pump down.
4.2 Piping
The suction pipe must never be smaller than diameter of pump suction nozzle. Use of suction pipe one
or two sizes larger is desirable. Quick closing valves should be avoided to protect the pump from dam-
age due to shock. All piping should be independently supported and align naturally to the pump flanges.
Piping should be run from the pump with final connections made at a point downstream. This is to pre-
vent problems with pump flange bolt hole alignment. The discharge head should never be loosened to
make up piping downstream of the pump. For operation at low flow, or to ensure liquid will always be
flowing through the pump, a bypass line should be installed. The bypass line should be returned to the
liquid source and injected below minimum liquid level to prevent air entrainment. If a bypass line is not
used, it is recommended that precautions be taken to insure that the pump will not run dry, run at closed
discharge, or handle pumpage of excessive temperature at pump suction. Devices which can protect the
pump from the above problems are flow switches or high temperature switches.
Install gauge connections at the pump discharge and suction. The connections should be located be-
tween the pump and its discharge and suction valves. When a suction screen is used an additional con-
nection is recommended for measuring pressure drop across the screen.
4.3 Alignment procedures
Pump and motor must be brought into both parallel and angular alignment, using one of the methods
listed below. Use of the dial indicator method of parallel alignment is preferred.
Parallel Alignment - Dial Indicator Method
Mount a dial indicator on the driver shaft to read on the pump coupling hub. "Zero" the dial indicator at
the top. Turn the driver shaft and check the dial indicator reading at four points 90° apart on the pump
coupling hub. Correct the parallel alignment by moving the driver side to side or by shimming it up or
down. Parallel alignment is achieved when side to side readings agree within 0.004" TIR. Set mo-
tors .002" (.004" TIR) to .004" (.008" TIR). Low regardless of pumpage temperature. Note: TIR is Total
Indicator Reading.
4 Installation
8 3335 Installation, Operation and Maintenance Instructions

Figure 1: Dial indicator method
Parallel Alignment - Straight Edge Method
Place a straight edge across both coupling hubs at four points 90° apart. Use a feeler gauge to measure
the amount of misalignment at each of the four points. Make alignment corrections by moving driver side
to side or by shimming it up or down. The unit will be in reasonable alignment when the straight edge
rests evenly on both hubs in all four locations.
Figure 2: Straight edge method
Angular Alignment
Using taper or feel gauge, measure the gap between driver and pump coupling hubs at four points 90°
apart, beginning at top. Correct angular alignment by moving the driver side to side or by shimming. An-
gular alignment is achieved when thickness gauge readings do not vary by more than .002"
Figure 3: Taper or feeler gauge method
4.3 Alignment procedures
3335 Installation, Operation and Maintenance Instructions 9

4.4 Rotation check and connection of coupling
Before coupling is connected, jag motor to check for correct rotation. Motor rotation should be counter-
clockwise when viewed from coupling end. If electric power is not available, do not connect coupling until
correct rotation has been verified.
4.5 Lubrication
1. H frames have flood oil lubricated bearings. The bearings are not lubricated at the factory. A con-
stant level oiler is packed with the pump. Use a good quality turbine oil of 300 SSU viscosity at
l00°F (Approx. SAE 20). Oil should be renewed at 3 month intervals.
2. Assemble the constant level oiler as illustrated in Figure 5. The constant level oiler can be instal-
led on either side of the bearing frame.
3. Check and set the oiler adjustment. The setting dimension A of 9/16" is illustrated below.
Figure 4: Oiler adjustment
4. Fill bearing reservoir using oiler bottle. Several fillings will be required. Never fill the frame
through the frame breather hole located at the Top of the frame or through the oiler cup without
use of the bottle. This can result in overfilling and high oil temperature.
4.4 Rotation check and connection of coupling
10 3335 Installation, Operation and Maintenance Instructions

5 Operation
5.1 Start-up check
Rotate pump shaft by hand to be sure it is free. If pump cannot be turned by hand, or binding and rub-
bing are noticed, correct before starting. Insure that alignment and rotation procedures in Installation sec-
tion have been followed.
5.2 Start-up procedure
1. Pump suction pipe and pump must be full of liquid before pump is started. Open suction valve fully
and prime the pump. Vent air out of pump through recirculation line Or gauge connection at pump
discharge. If suction supply is below pump, priming can be accomplished by an ejector or priming
pump. A foot valve should be used in the suction line to maintain the prime when pump is shut
down.
2. If auxiliary piping for cooling and/or flushing from an outside source is being used, open valves and
establish flows.
3. The pump discharge valve should be not more than 10% open to establish and control flow.
4. Start the pump. Slowly open the discharge valve as the system fills and pressurizes.
5.3 Operational checks
Inspect pump carefully and frequently during the first few hours of operation. Mechanical seal may weep
slightly but should "run in” in a few hours. Be sure all auxiliary lines (cooling, flushing, sealing, etc.) are
functioning properly. Check pump bearings for excessive heating. An uncooled bearing temperature of
190° is normal. Check motor for excessive heating. Check complete unit for excessive vibration or un-
usual noise. Do not run pump at greatly reduced flow because all the motor horsepower will go into heat-
ing the liquid in the pump and damage may result. Do not run pump beyond maximum recommended
flow since damage could result due to excessive wear on the back washers (546).
Table 2: Recommended flow
Maximum recommended flow
HDB210 60 Hertz Speed->3550 RPM 5O Hertz Speed 2900 RPM
280 GPM (63.6 m3/h) 230 GPM (52.3 m3/h)
Minimum flow for 14 stage pump only
90 GPM (63.6 m3/h) 82 GPM (18. 6 m3/h)
5.4 Shut down procedure
If pump is installed with a check valve, it can be shut down without closing any valves. When no check
valve is used, the discharge valve must be closed before the pump is stopped to prevent backflow
through the pump. If the pump is to be serviced, be sure suction valves are closed, auxiliary cooling and
flushing flows are shutoff and motor is locked out before working on pump.
5 Operation
3335 Installation, Operation and Maintenance Instructions 11

6 Preventative and Corrective Maintenance
6.1 Lubrication
Refer to 4.5 Lubrication on page 10 for lubrication procedures for pump. Oil should be renewed at 3
month intervals. Follow motor and coupling manufacturer's lubrication instructions.
6.2 Mechanical seal
The seal requires no attention other than to make sure that circulation lines, where installed, do not be-
come clogged.
6.3 Vibration
It is good practice to periodically monitor vibration of the pump. Normally vibration level will be well below
accepted standards. Of equal importance is that the vibration level does not increase. If a problem with
vibration is encountered, refer to 8.1 Troubleshooting on page 20.
6.4 Performance
If performance deteriorates, refer to 8.1 Troubleshooting on page 20.
6 Preventative and Corrective Maintenance
12 3335 Installation, Operation and Maintenance Instructions

7 Disassembly and Reassembly
7.1 Disassembly of pump
1. Lock out power source.
2. Shut off valves controlling flow to and from pump. Disconnect piping.
3. Uncouple pump. See coupling manufacturer's instructions for removal.
4. Drain oil through oil drain plug on bottom of bearing frame (228A)
5. Drain pump through plug (408A)in bottom of casing adapter. If pump has handled corrosive liquids,
the motor end should be elevated to assure complete draining. Flushing recommended.
6. Loosen set screw in coupling hub (233) and remove hub and key (400) from stub shaft. (330)
7. Loosen pump foot retaining bolt (371U) so that the discharge head (152) can turn in casing (100).
Do not remove pump foot at this time.
8. Place a wrench on the discharge head (152). Loosen the discharge head. Insure casing (100) is
free to turn on case adapter (108). Threads are right hand. Do not completely unscrew discharge
head or casing.
9. Set pump in a vertical position. It will be necessary to secure the bearing frame (228A) to a suitable
support high enough off floor to protect the pump shaft from damage. Remove discharge head
(152) and pump foot (131). Unscrew and remove casing (100) from case adaptor (108). The casing
must be removed vertically so that the pump shaft will not be bent. The total overhead clearance
required will be the total pump length plus the length of the casing (100).
10. Remove the shaft retaining ring (361) and shims (331) from shaft (122). Remove sleeves (157).
Mark all parts for reassembly.
11. Slide diffusers (150), impellers (101), shims (331) and intermediate bearings (260) off shaft (122).
Also, note spacer blanks (150A) substituted for some of the stages. These will be located at the dis-
charge end of the pump. Mark each impeller, diffuser, intermediate bearing and shim washer to
identify its position in the pump to aid in reassembly.
12. Remove impeller key (178) from shaft.
13. Unbolt and remove casing adapter (108) from bearing end cover (109c).
14. Remove pump shaft (122) from splined end of stub shaft. For pumps with special mechanical seal
arrangements, the seal seat mount (158) is removed when the shaft is pulled out of the splined end
of the stub shaft. This must be done carefully to avoid mechanical seal damage.
15. Remove seal from shaft only if it is to be replaced. Use care to avoid cutting rubber bellows on
splined teeth of pump shaft. Remove retaining ring (361D) from shaft.
16. To remove the drive collar (522) and split collet (524) from the shaft, tap the drive collar (522) away
from the splined end of the shaft (122) and off the split collet (524). A piece of pipe sized to seat
against the larger end of the drive collar should be used for this. Spread the split collet with a suita-
ble tool, remove it from the groove in the shaft and slide it off the shaft.
17. Remove seal seat mount (158) if not already pulled in step 14. Note: Before dismantling bearing
frame, mark all pieces for reassembly.
18. Unbolt and remove bearing end cover (109C) and wave washer (529) from bearing frame (228A).
19. Unbolt and remove end cover. (109A).
20. Remove stub shaft assembly from bearing frame (228A).
21. Bend tang of bearing lockwasher (382) out of slot in bearing locknut (136).
22. Remove thrust bearing locknut (136) and bearing lockwasher (382)
23. Remove ball bearings (112A) and (168A) using a suitable puller or press. Care must be taken to
prevent damage to bearings if they are to be reused. Do not use a hammer to drive shaft through
bearings. Protect bearings from contamination.
7.2 Inspection and overhaul
1. O-rings (412K) & (412L) - Inspect and replace if damaged.
7 Disassembly and Reassembly
3335 Installation, Operation and Maintenance Instructions 13

2. Shaft (122) Check shaft for runout to be sure it is not bent. Bearing seats, retaining ring grooves,
Keyways, surfaces under oil seals, and surface under mechanical seal should be in good condition.
3. Mechanical Seal (383) Replace if faces are worn, scarred, or cracked, or if elastomeric bellows is
damaged.
4. Backwashers (546) - Inspect and replace if worn. The backwashers (546) are nominal .030"
(0.8mm) thick, replace if worn to less than .020" (0.5mm).
5. Intermediate and discharge head bearings - Check for excessive wear in carbon bushings. Replace
as necessary.
6. Oil seal (332A) & (3330) - Replace if worn or damaged.
7. Diffusers (l50) - Male and female lock fits should be checked for foreign materials or damage.
8. General - All parts should be clean and free of burrs before assembly. This is especially important at
O-ring grooves, threads, bearing areas and diffuser locks.
7.3 Reassembly of power end
1. Clean the frame (228A), and bearing end covers (109A) and (109C). Press in new oil seals (332A)
and (333D) with the lips facing in.
2. The H frame uses a single deep groove radial bearing and two angular contact thrust bearings. The
radial bearing (168A) has both outer race edges the same thickness. Press radial bearing (168A) on
from splined end of shaft. The thrust bearings (112A) are installed in tandem with the thin edge of
the outer races facing the radial bearing (168A). Press the thrust bearings on individually. Press on
inner races only.
3. Install bearing lock washer (382). Thread bearing locknut (136) on stub shaft (380) and tighten firm-
ly. Set bearing lock washer (382) tang in groove in bearing locknut (136).
4. Install bearing end cover (109C) with gasket (360) and tighten cap bolt (370N) evenly. Ensure word
"TOP" in end cover is up.
5. Place wave washer (529) in bottom of bearing frame (228A) against bearing end cover (109C).
6. After lightly oiling the bearing frame bore and bearing outer races, install the stub shaft assembly.
This is a sliding fit: Do not tap.
7. Install bearing end cover (109A) and gasket (360). Tighten cap screws evenly. Ensure word "TOP"
on end cover is up.
8. Replace pump coupling hub (233) and key (400).
7.4 Reassembly of liquid end
1. Install O-ring (412L) on stationary seat mount (158) and install seal mount (158) into end cover
(109C).
2. Install O-ring on stationary seat of mechanical seal (383B). Lubricate O-ring well. Press stationary
seat into seal mount (158).
3. To install the drive collar (522) and split collet (524) slide the drive collar (522) over the shaft, past
the long groove for the split collet (524), with the arrow end away from the splined end of the shaft.
Spread the split collet (524) with a suitable tool, slide it onto the shaft with the narrow end away
from the splined end of the shaft. Seat the split collet (524) into the long groove. Push the drive col-
lar (522) over the split collet (524). Drive the collar over the split collet firmly until movement stops.
Do not mar or damage face of collar. The split collet (524) must still be in the groove, butted against
the edge closest to the splined end of the shaft. If the drive collar (522) and split collet (524) are not
positioned and seated properly as shown in Figure 5, damage to the pump will occur in operation.
4. Install mechanical seal retaining ring (361D) on shaft (122) in groove near splined end.
7.3 Reassembly of power end
14 3335 Installation, Operation and Maintenance Instructions

5. Slide rotary unit of mechanical seal (383A) over splined end of pump shaft (122) and against retain-
ing ring (361D). Use care to avoid cutting rubber bellows on splined teeth.
6. With bearing frame assembly remounted on support structure in the vertical position, bolt casing
adapter (108) to end cover (109C), install O-ring (412K).
7. Slide splined end of pump shaft (122) into splined insert of stub shaft (380). Ensure rotary seal ring
does not drop out of rotary seal.
8. Install impeller key (178) in shaft (122).
9. Check to ensure that the drive collar is properly located. To do this, it is first necessary to be sure
the pump shaft is in its proper operating position, which is with the splined end of the shaft bottomed
in the stub shaft. Push the shaft down firmly until it bottoms in the stub shaft. The mechanical seal
will tend to raise the shaft, pressure must be maintained to keep the shaft bottomed. Lay a straight
edge across the casing adapter and against the shaft. There should be a gap between the top of
the drive collar and the straight edge of up to approximately one-eighth inch. If the drive collar is too
high, a problem exists with parts. recheck the drive collar (524) location to ensure it is seated prop-
erly.
7.4 Reassembly of liquid end
3335 Installation, Operation and Maintenance Instructions 15

Figure 5: Move diffuser up and
down
Figure 6: Move diffuser up and
down
10. Proper location of the impellers on the shaft is obtained by the use of shims (331) between the drive
collar and the first stage impeller hub, and also between the hubs of the remaining impellers. Shins
are supplied in .010" and .030" thicknesses. Slide sufficient shims over the shaft and against the
drive collar until the top of the shim stack is flush with the straight edge across the casing adapter.
Remember that the shaft must be bottomed during this procedure.
11. Ensure back washers (546) are in place on all impellers.
12. Install the suction diffuser (151) on the casing adapter (108). Ensure suction diffuser (15l) and cas-
ing adapter (108) fits are clean and that the diffuser is free to turn in the casing.
13. Install the first stage impeller (201) on. shaft (122).
14. Push shaft and impeller down firmly until the splined end of the shaft bottoms in the stub shaft. In-
stall a dial indicator as shown in Fig. 7. With the shaft bottomed, move the diffuser up and down
squarely as shown in Fig. 8 and Fig. 9. The amount of up and down movement is read on the dial
indicator is the actual front clearance.
15. Actual front clearance must be equal to required front clearance shown in Table 4. If not, add or
remove shims between the drive collar and first stage impeller hub as required.
7.4 Reassembly of liquid end
16 3335 Installation, Operation and Maintenance Instructions

Figure 7: Figure 8:
Table 3: Required front clearance
HDB210 Impeller Stack Required Front Clearance
1st Stack (2 stages) +.030 ± .005"
2nd Stack (3rd to 8th stages) +.030 ± .005"
3rd Stack (9th to 14th stages) +0.20 ± .005"
16. Continue adding diffusers and impellers checking each one for proper Front Clearance. Shim each
impeller as necessary. Install intermediate bearings (268) with intermediate bearing shaft sleeves
(157B) where required. Refer to Table 5 for intermediate bearing location
Table 4: Intermediate bearing location
Size Stage Bearing: Stage Bearing Stage
HDBZl0-6 2 1 4 - -
HDB210-8 2 1 6 - -
HDBZl0-10 2 1 6 1 2
HDB210-l2 2 1 6 1 4
HDB210-l4 2 1 6 1 6
7.4 Reassembly of liquid end
3335 Installation, Operation and Maintenance Instructions 17

17. Install spacer sleeves (157) after the last impeller has been installed and its Front Clearance has
been set. Check space between end of last spacer sleeve (157) and snap ring groove in end of
shaft. Add shims as necessary under the last spacer until the spacer sleeve covers approximately
½ of the snap ring groove. Enter the shaft retaining ring (snap ring) (361) over the shaft and press
down until it snaps in the groove.
18. Install O-ring (412K) on the discharge head (152).
19. Slide casing (100) over assembly and screw onto casing adapter (108). O-ring should be lubricated
to aid in assembly.
20. Screw discharge head (152) into casing (100).
21. Replace pump foot (131). Tighten cap screw (371U) finger tight. Tighten firmly after start-up and
when pump has reached operating temperature.
22. Lay pump in horizontal position. Secure frame to floor. Discharge head must be tightened to the fol-
lowing minimum torque value 600 ft. - lbs. (813 newton metres). Operation of pump without proper
torque on discharge head (152) can result in damage to the pump. Do not loosen discharge head to
align flange bolt holes. When holes do not align, the discharge head can be tightened more to ob-
tain alignment.
23. Pump is now ready for re-installation. Follow applicable installation, lubrication and start-up proce-
dures. Refer to 4.3 Alignment procedures on page 8 and 4.5 Lubrication on page 10.
7.5 Bearing replacement
1. Lock out power and remove motor from base.
2. Support liquid end and remove the bearing frame assembly from the pump by removing cap screws
(371L).
3. Unbolt and remove bearing end cover (109A).
4. Remove stub shaft assembly. Replace bearings as needed.
7.6 Mechanical seal replacement
1. Lock out power and remove motor from base. Support liquid end and remove the bearing frame
(228A) from case adapter (108) by removing end cover (109) to case adaptor (108) screws.
2. Pull stationary seat mount (158) from fit in case adapter (108). Push stationary seat (385B) out of fit
in stationary seat mount (158). Clean parts and install new stationary seat. Renew O-ring as need-
ed.
3. Slide rotary seal unit (383A) off pump shaft (122).)
4. Slide new rotary unit over splined end of pump shaft (122) up against retaining ring (361D). Lubri-
cate shaft to avoid damaging rubber bellows of rotary seal unit.
5. Reinstall stationary seat mount (158) with O-ring (412L) in case adapter (108) fit.
6. Reinstall bearing frame (228A) and tighten bearing frame (228A) to case adapter (108) screws.
7. Refer to mechanical seal drawing for special seal arrangements.
7.5 Bearing replacement
18 3335 Installation, Operation and Maintenance Instructions